Pollution from car tires is killing off salmon on US west coast, study finds – The Guardian

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Pollution from car tires that washes into waterways is helping cause a mass die-off of salmon on the US west coast, researchers have found.
In recent years, scientists have realized half or more of the coho salmon, also known as silver salmon, returning to streams in Washington state were dying before spawning. The salmon, which reach 2ft in length, are born in freshwater streams before making an epic journey out to sea where they live most of their…

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